In recent decades,theoretical and empirical studies have indicated that a focus of linguistic forms in the task-based language teaching promotes the process of language acquisition in learners.The current paper discusses the definition and classification of focus-on-form instruction in the first place,and then attempts to analyze how focus-on-form instruction can be incorporated into task-based language teaching.Also,it introduces the role of teachers in focus-on-form instruction in classroom settings before some more questions are raised for further research.